Mitel SX-200 DIGITAL Pabx Engineering Information Manual

Troubleshooting 
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itep 
10 
11 
Action 
A problem with the DX module on the Main 
Control card, or with Main Control card itself could 
cause these symptoms. Replace Main Control card. Description / Follow-up 
l If problem persists, contact MITEL Field Service. 
Check if Bay Control card ALARM LED is flashing. Yes 8 Go to step 12. 
No: l Go to step 15. 
STEP 12 SHOULD BE DONE DURING PERIODS OF LOW OR NO TRAFFIC, AS IT MAY HAVE AN ADVERSE EFFECT ON 
SYSTEM PERFORMANCE. DO NOT PROCEED TO STEP 12 UNLESS...

Troubleshooting 
TABLE 4-l 
BAY CONTROL CARD STATUS LEDs 
TX LED RX LED 
on on ALARM LED 
on Meaning 
Bay Control card is either waiting for, 
or has lost communication with the 
Main Control card. If this state 
persists for more than a few 
seconds, there is no communication. 
flashing flashing on Bay Control card is being 
downloaded by the Main Control 
card. 
flashing flashing 
Off Bay Control card is up and running 
and communicating to the Main 
Control card. 
Off Off Off 
.flashing This is the...

Troubleshooting 
I 1 
EEI 
I I 
K40129RlEl 
Figure 4-I Bay Control Card Device Locations 
Page 4-6  

Troubleshooting 
ANALOG BAY PERiPHERAL CONTROL’ SUBSYSTEM 
4.11 The following paragraphs detail the troubleshooting procedures 
for the Analog Bay Peripheral Control Subsystem. 
Configuration 
4.12 The Analog Bay Peripheral Control Subsystem consists of the 
following cards: 
Name Part No. 
l Peripheral Control Card (PCC) 9 108-203-OOO-NA 
0 PCC EPROM 
* Digital Interface Card (DIC) 9 108-002-OOO-NA 
0 DIC EPROM 
l Scanner Card 9 11 O-l 04-OOO-NA, 
9 11 O-004-OOO-NA 
Peripheral Control Subsystem Power-Up...

Troubleshooting 
CHART 4-2 
ANALOG PERIPHERAL BAY TROUBLESHOOTiNG PROCEDURES 
tw Action Description / Follow-up Remarks 
1 If Scanner 7-segment displays do not read “b3” or l Go to step 2. 
“b4”, press MASTER RESET pushbutton on the 
Scanner card front panel. 
2 Check if power-up tests have begun. Yes: l Go to step 7. see Note 
No : * Go to step 3. 1 
3 Ensure bay power is turned on. * TOP SHELF POWER switch on the 
maintenance panel should be in the ON 
position. 
* Go to step 4. 
4 Verify that power is...

CHART 4-2 (Cont’d) 
ANALOG PERIPHERAL BAY TROUBLESHOOTING PROCEDURES 
tw Action Description / Follow-up Remarks 
12 Replace the Peripheral Control card; power up the Yes: l Power down shelf; go to step 13. 
bay. Does fault persist? No : l Problem fixed. 
13 Replace the Scanner card; power up the bay. Does Yes: * Possible problem with Main Control card; 
the fault persist? go to step 14. 
No : l Problem fixed. 
14 Power down the system; replace the Main Control Yes: * Refer problem to Mite1 field service....

Troubleshooting 
Notes to Chart 4-2: 
1. 
2. 
3. 
4. The correct 7-segment display reset sequence is: 00, bb, OA, b3 (or b4). Refer to 
Section MITL9108-093-353-NA, General Maintenance Information for details on the 
Scanner card LED codes. 
At this point, if there is no call processing in the affected bay, contact Mite1 Field 
Service. 
In the peripheral cabinet, the affected DIC card will have the “Rx” LED on (i.e., not off, 
not flashing) and the “TX” LED off. 
Refer to Section MITL9108-093-200-NA,...

Troubleshookg 
FLOPPY DISK SUBSYSTEM 
4.16 The following paragraphs detail the troubleshooting procedures 
for the Floppy Disk Subsystem. Chart 4-3 outlines the trouble- 
shooting procedures for the Floppy Disk Subsystem. Note that some 
troubleshooting of the Floppy Disk Subsystem is done implicitly 
through the troubleshooting of the Main Control card. 
Configuration 
4.17 The Floppy Disk Subsystem consists of the following compo- 
nents: 
Name Part. No. 
l Floppy Disk Drive 9 109-024-OOO-NA,...

Troubleshooting 
CHART 4-3 
FLOPPY DISK SUBSYSTEM TROUBiESHOOTlNG PROCEDURES 
ep 
Action Description / Follow-up Remarks 
I Ensure bay power is turned on. . Bay power supply switch should be in the 
ON position. 
l Go to step 2. 
! Verify that power is available in the bay. (Measure Yes: l Go to step 3. see Fig 
at backplane.) No : . This indicates a power supply problem. 2-2 
Refer to the Bay Power Supply 
troubleshooting procedures. 
3 Verify power cable and signal ribbon cable are * Go to step 4. see...

Troubleshooting 
CHART 4-3 (Cont’d) 
FLOPPY DISK SUBSYSTEM TROUBLESHOOTING PROCEDURES 
jtep Action Description / Follow-up Remarks 
10 Check if Main Control card 7-segment displays Yes: l indicates that the disk drive is empty; go 
show the following error code: to step Il., 
E. No: iGotostep12. 
4 
11 Either (a) Re-insert original diskette, or * NOTE : ONLY RESTART THE SYSTEM 
(b) insert new diskette and restart the system DURING LOW OR NO TRAFFIC 
CONDITIONS, AS THIS HAS AN ADVERSE 
EFFECT ON SYSTEM...